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13153345 = 52779497
BaseRepresentation
bin110010001011…
…010001000001
3220202020222221
4302023101001
511331401340
61145531041
7216541642
oct62132101
926666887
1013153345
117474337
1244a3a81
132956c5a
141a656c9
15124c44a
hexc8b441

13153345 has 8 divisors (see below), whose sum is σ = 15842664. Its totient is φ = 10483584.

The previous prime is 13153337. The next prime is 13153391. The reversal of 13153345 is 54335131.

It can be written as a sum of positive squares in 4 ways, for example, as 258064 + 12895281 = 508^2 + 3591^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13153345 - 23 = 13153337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3364 + ... + 6133.

It is an arithmetic number, because the mean of its divisors is an integer number (1980333).

Almost surely, 213153345 is an apocalyptic number.

It is an amenable number.

13153345 is a deficient number, since it is larger than the sum of its proper divisors (2689319).

13153345 is an equidigital number, since it uses as much as digits as its factorization.

13153345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9779.

The product of its digits is 2700, while the sum is 25.

The square root of 13153345 is about 3626.7540583833. The cubic root of 13153345 is about 236.0543839525.

Adding to 13153345 its reverse (54335131), we get a palindrome (67488476).

The spelling of 13153345 in words is "thirteen million, one hundred fifty-three thousand, three hundred forty-five".

Divisors: 1 5 277 1385 9497 47485 2630669 13153345